Vol I. Sun — Cambrian Faunas of North China (iv) 9 



Ghan':shan series — This series consists of red or purple shales with seven or 

 eight intraformational (edgewise) limestone conglomerates (wurmkalke). The red shale 

 is richly fossiliferous and is found in Jen-Chuang, f£ Jf£ 2 li N. of Chao-Kuo-Chuang, 

 and Chengshan. The lithological charater of this red or purple shale is not unlike that of 

 the Manto shale, but it can lie distinguished by the series of wurmkalk beds interbedded 

 with it. The detail section is given in the bulletin" of the Geological Society of China 

 (Vol. II No. 1-2). p. 94-45. It contains the following species. 



Brachiopoda 



1 Obolus mollisonensis? Walcott 



2 Eoorthis sp. 

 Trilobita 



3 Changshania conica Snn 



4 Changshania? truncata Sun 



5 Agnostus hoi Sun 



Obolns mollisonensiif Walcott is an American species from the Upper Cambrian 

 of North American. Eoorthis is one of the Upper Cambrian genera. The other genera 

 and species are new. Lithologically the red fossiliferous shales are interbedded with 

 intraformational conglomerates (Wurmkalke) which are characteristic of the Upper 

 Cambrian. This series corresponds to the lower part of the Chaumitien limestone of 

 Shantung. 



Fenosfan series — -This series is composed of shales and thin-bedded limestone 

 (calcilutite) ; and repre:^ents the uppermost part of the Upper Cambrian. It is very well 

 developed at Feng-Shan H. th in the ^'eh-li <a M regi'm where the disconformable contact 

 between the Fengshan limestone and the overlj^ing Ordovician limestone was discovered. 

 The Fengshan limestone is also found in Lei-Chuang, Chihli. The m.ost common species 

 are as follows: 



Brachiopoda 



1 Obolus luanhsiensis Grabau (Mss.) 



2 Lingulella kayseri Grabau (Mss.) 

 Trilobita 



3 Ftychaspis subglobosa Grabau (Mss.) 



4 Ftychaspis suni Grabau (Mss.) 



5 Mansuyia orientalis (Grabau) Sun 



6 lllaanurus sp. 



7 x-Vnomocare sp. 



* Tlie Upper Cambrian of Kaiping Baaiii by the author. 



